LiveZilla before 5.1.2.1 includes the operator password in plaintext in Javascript code that is generated by lz/mobile/chat.php, which might allow remote attackers to obtain sensitive information and gain privileges by accessing the loginName and loginPassword variables using an independent cross-site scripting (XSS) attack.
http://forums.livezilla.net/index.php?/topic/163-livezilla-changelog/